ZFIN ID: ZDB-PUB-061227-18
The anaphase-promoting complex is required in both dividing and quiescent cells during zebrafish development
Wehman, A.M., Staub, W., and Baier, H.
Date: 2007
Source: Developmental Biology 303(1): 144-156 (Journal)
Registered Authors: Baier, Herwig, Staub, Wendy, Wehman, Ann
Keywords: none
MeSH Terms:
  • Anaphase-Promoting Complex-Cyclosome
  • Animals
  • Base Sequence
  • Cell Cycle/physiology*
  • Cell Cycle Proteins/genetics
  • Chromosome Mapping
  • Cyclin B
  • DNA Primers
  • Immunohistochemistry
  • Mitosis/physiology*
  • Models, Biological*
  • Molecular Sequence Data
  • Retina/embryology
  • Sequence Analysis, DNA
  • Ubiquitin-Protein Ligase Complexes/genetics*
  • Ubiquitin-Protein Ligase Complexes/metabolism*
  • Zebrafish/embryology*
PubMed: 17141209 Full text @ Dev. Biol.
FIGURES
ABSTRACT
The anaphase-promoting complex/cyclosome (APC/C) regulates multiple stages of the cell cycle, most prominently mitosis. We describe zebrafish with mutations in two APC/C subunits, Cdc16 and Cdc26, whose phenotypes reveal a multifaceted set of defects resulting from the gradual depletion of the APC/C. First, loss of the APC/C in dividing cells results in mitotic arrest, followed by apoptosis. This defect becomes detectable in different organs at different larval ages, because the subunits of the APC/C are maternally deposited, are unusually stable, and are depleted at uneven rates in different tissues. Second, loss of the APC/C in quiescent or differentiated cells results in improper re-entry into the cell cycle, again in an apparently tissue-specific manner. This study is the first demonstration of both functions of the APC/C in a vertebrate organism and also provides an illustration of the surprisingly complex effects that essential, maternally supplied factors can have on the growing animal over a period of 10 days or longer.
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